/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package me.mingshan.util;

/**
 * The util of string.
 *
 * @author mingshan
 */
public class StringUtil {

    private StringUtil() { throw new UnsupportedOperationException("It's prohibited to create instances of the class."); }

    public static boolean isEmpty(Object str) {
        return (str == null || "".equals(str));
    }

    public static boolean hasLength(CharSequence str) {
        return (str != null && str.length() > 0);
    }

    public static boolean hasLength(String str) {
        return (str != null && !str.isEmpty());
    }

    public static String[] split(String toSplit, String delimiter) {
        if (!hasLength(toSplit) || !hasLength(delimiter)) {
            return null;
        }

        return toSplit.split(delimiter);
    }

}